2 * sata_nv.c - NVIDIA nForce SATA
4 * Copyright 2004 NVIDIA Corp. All rights reserved.
5 * Copyright 2004 Andrew Chew
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; see the file COPYING. If not, write to
20 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
23 * libata documentation is available via 'make {ps|pdf}docs',
24 * as Documentation/DocBook/libata.*
26 * No hardware documentation available outside of NVIDIA.
27 * This driver programs the NVIDIA SATA controller in a similar
28 * fashion as with other PCI IDE BMDMA controllers, with a few
29 * NV-specific details such as register offsets, SATA phy location,
32 * CK804/MCP04 controllers support an alternate programming interface
33 * similar to the ADMA specification (with some modifications).
34 * This allows the use of NCQ. Non-DMA-mapped ATA commands are still
35 * sent through the legacy interface.
39 #include <linux/kernel.h>
40 #include <linux/module.h>
41 #include <linux/pci.h>
42 #include <linux/init.h>
43 #include <linux/blkdev.h>
44 #include <linux/delay.h>
45 #include <linux/interrupt.h>
46 #include <linux/device.h>
47 #include <scsi/scsi_host.h>
48 #include <scsi/scsi_device.h>
49 #include <linux/libata.h>
51 #define DRV_NAME "sata_nv"
52 #define DRV_VERSION "3.5"
54 #define NV_ADMA_DMA_BOUNDARY 0xffffffffUL
63 NV_PORT0_SCR_REG_OFFSET = 0x00,
64 NV_PORT1_SCR_REG_OFFSET = 0x40,
66 /* INT_STATUS/ENABLE */
69 NV_INT_STATUS_CK804 = 0x440,
70 NV_INT_ENABLE_CK804 = 0x441,
72 /* INT_STATUS/ENABLE bits */
76 NV_INT_REMOVED = 0x08,
78 NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */
81 NV_INT_MASK = NV_INT_DEV |
82 NV_INT_ADDED | NV_INT_REMOVED,
86 NV_INT_CONFIG_METHD = 0x01, // 0 = INT, 1 = SMI
88 // For PCI config register 20
89 NV_MCP_SATA_CFG_20 = 0x50,
90 NV_MCP_SATA_CFG_20_SATA_SPACE_EN = 0x04,
91 NV_MCP_SATA_CFG_20_PORT0_EN = (1 << 17),
92 NV_MCP_SATA_CFG_20_PORT1_EN = (1 << 16),
93 NV_MCP_SATA_CFG_20_PORT0_PWB_EN = (1 << 14),
94 NV_MCP_SATA_CFG_20_PORT1_PWB_EN = (1 << 12),
96 NV_ADMA_MAX_CPBS = 32,
99 NV_ADMA_SGTBL_LEN = (1024 - NV_ADMA_CPB_SZ) /
101 NV_ADMA_SGTBL_TOTAL_LEN = NV_ADMA_SGTBL_LEN + 5,
102 NV_ADMA_SGTBL_SZ = NV_ADMA_SGTBL_LEN * NV_ADMA_APRD_SZ,
103 NV_ADMA_PORT_PRIV_DMA_SZ = NV_ADMA_MAX_CPBS *
104 (NV_ADMA_CPB_SZ + NV_ADMA_SGTBL_SZ),
106 /* BAR5 offset to ADMA general registers */
108 NV_ADMA_GEN_CTL = 0x00,
109 NV_ADMA_NOTIFIER_CLEAR = 0x30,
111 /* BAR5 offset to ADMA ports */
112 NV_ADMA_PORT = 0x480,
114 /* size of ADMA port register space */
115 NV_ADMA_PORT_SIZE = 0x100,
117 /* ADMA port registers */
119 NV_ADMA_CPB_COUNT = 0x42,
120 NV_ADMA_NEXT_CPB_IDX = 0x43,
122 NV_ADMA_CPB_BASE_LOW = 0x48,
123 NV_ADMA_CPB_BASE_HIGH = 0x4C,
124 NV_ADMA_APPEND = 0x50,
125 NV_ADMA_NOTIFIER = 0x68,
126 NV_ADMA_NOTIFIER_ERROR = 0x6C,
128 /* NV_ADMA_CTL register bits */
129 NV_ADMA_CTL_HOTPLUG_IEN = (1 << 0),
130 NV_ADMA_CTL_CHANNEL_RESET = (1 << 5),
131 NV_ADMA_CTL_GO = (1 << 7),
132 NV_ADMA_CTL_AIEN = (1 << 8),
133 NV_ADMA_CTL_READ_NON_COHERENT = (1 << 11),
134 NV_ADMA_CTL_WRITE_NON_COHERENT = (1 << 12),
136 /* CPB response flag bits */
137 NV_CPB_RESP_DONE = (1 << 0),
138 NV_CPB_RESP_ATA_ERR = (1 << 3),
139 NV_CPB_RESP_CMD_ERR = (1 << 4),
140 NV_CPB_RESP_CPB_ERR = (1 << 7),
142 /* CPB control flag bits */
143 NV_CPB_CTL_CPB_VALID = (1 << 0),
144 NV_CPB_CTL_QUEUE = (1 << 1),
145 NV_CPB_CTL_APRD_VALID = (1 << 2),
146 NV_CPB_CTL_IEN = (1 << 3),
147 NV_CPB_CTL_FPDMA = (1 << 4),
150 NV_APRD_WRITE = (1 << 1),
151 NV_APRD_END = (1 << 2),
152 NV_APRD_CONT = (1 << 3),
154 /* NV_ADMA_STAT flags */
155 NV_ADMA_STAT_TIMEOUT = (1 << 0),
156 NV_ADMA_STAT_HOTUNPLUG = (1 << 1),
157 NV_ADMA_STAT_HOTPLUG = (1 << 2),
158 NV_ADMA_STAT_CPBERR = (1 << 4),
159 NV_ADMA_STAT_SERROR = (1 << 5),
160 NV_ADMA_STAT_CMD_COMPLETE = (1 << 6),
161 NV_ADMA_STAT_IDLE = (1 << 8),
162 NV_ADMA_STAT_LEGACY = (1 << 9),
163 NV_ADMA_STAT_STOPPED = (1 << 10),
164 NV_ADMA_STAT_DONE = (1 << 12),
165 NV_ADMA_STAT_ERR = NV_ADMA_STAT_CPBERR |
166 NV_ADMA_STAT_TIMEOUT,
169 NV_ADMA_PORT_REGISTER_MODE = (1 << 0),
170 NV_ADMA_ATAPI_SETUP_COMPLETE = (1 << 1),
172 /* MCP55 reg offset */
173 NV_CTL_MCP55 = 0x400,
174 NV_INT_STATUS_MCP55 = 0x440,
175 NV_INT_ENABLE_MCP55 = 0x444,
176 NV_NCQ_REG_MCP55 = 0x448,
179 NV_INT_ALL_MCP55 = 0xffff,
180 NV_INT_PORT_SHIFT_MCP55 = 16, /* each port occupies 16 bits */
181 NV_INT_MASK_MCP55 = NV_INT_ALL_MCP55 & 0xfffd,
183 /* SWNCQ ENABLE BITS*/
184 NV_CTL_PRI_SWNCQ = 0x02,
185 NV_CTL_SEC_SWNCQ = 0x04,
187 /* SW NCQ status bits*/
188 NV_SWNCQ_IRQ_DEV = (1 << 0),
189 NV_SWNCQ_IRQ_PM = (1 << 1),
190 NV_SWNCQ_IRQ_ADDED = (1 << 2),
191 NV_SWNCQ_IRQ_REMOVED = (1 << 3),
193 NV_SWNCQ_IRQ_BACKOUT = (1 << 4),
194 NV_SWNCQ_IRQ_SDBFIS = (1 << 5),
195 NV_SWNCQ_IRQ_DHREGFIS = (1 << 6),
196 NV_SWNCQ_IRQ_DMASETUP = (1 << 7),
198 NV_SWNCQ_IRQ_HOTPLUG = NV_SWNCQ_IRQ_ADDED |
199 NV_SWNCQ_IRQ_REMOVED,
203 /* ADMA Physical Region Descriptor - one SG segment */
212 enum nv_adma_regbits {
213 CMDEND = (1 << 15), /* end of command list */
214 WNB = (1 << 14), /* wait-not-BSY */
215 IGN = (1 << 13), /* ignore this entry */
216 CS1n = (1 << (4 + 8)), /* std. PATA signals follow... */
217 DA2 = (1 << (2 + 8)),
218 DA1 = (1 << (1 + 8)),
219 DA0 = (1 << (0 + 8)),
222 /* ADMA Command Parameter Block
223 The first 5 SG segments are stored inside the Command Parameter Block itself.
224 If there are more than 5 segments the remainder are stored in a separate
225 memory area indicated by next_aprd. */
227 u8 resp_flags; /* 0 */
228 u8 reserved1; /* 1 */
229 u8 ctl_flags; /* 2 */
230 /* len is length of taskfile in 64 bit words */
233 u8 next_cpb_idx; /* 5 */
234 __le16 reserved2; /* 6-7 */
235 __le16 tf[12]; /* 8-31 */
236 struct nv_adma_prd aprd[5]; /* 32-111 */
237 __le64 next_aprd; /* 112-119 */
238 __le64 reserved3; /* 120-127 */
242 struct nv_adma_port_priv {
243 struct nv_adma_cpb *cpb;
245 struct nv_adma_prd *aprd;
247 void __iomem *ctl_block;
248 void __iomem *gen_block;
249 void __iomem *notifier_clear_block;
255 struct nv_host_priv {
263 unsigned int tag[ATA_MAX_QUEUE];
266 enum ncq_saw_flag_list {
267 ncq_saw_d2h = (1U << 0),
268 ncq_saw_dmas = (1U << 1),
269 ncq_saw_sdb = (1U << 2),
270 ncq_saw_backout = (1U << 3),
273 struct nv_swncq_port_priv {
274 struct ata_prd *prd; /* our SG list */
275 dma_addr_t prd_dma; /* and its DMA mapping */
276 void __iomem *sactive_block;
277 void __iomem *irq_block;
278 void __iomem *tag_block;
281 unsigned int last_issue_tag;
283 /* fifo circular queue to store deferral command */
284 struct defer_queue defer_queue;
286 /* for NCQ interrupt analysis */
291 unsigned int ncq_flags;
295 #define NV_ADMA_CHECK_INTR(GCTL, PORT) ((GCTL) & (1 << (19 + (12 * (PORT)))))
297 static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
299 static int nv_pci_device_resume(struct pci_dev *pdev);
301 static void nv_ck804_host_stop(struct ata_host *host);
302 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance);
303 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance);
304 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance);
305 static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
306 static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
308 static int nv_noclassify_hardreset(struct ata_link *link, unsigned int *class,
309 unsigned long deadline);
310 static void nv_nf2_freeze(struct ata_port *ap);
311 static void nv_nf2_thaw(struct ata_port *ap);
312 static void nv_ck804_freeze(struct ata_port *ap);
313 static void nv_ck804_thaw(struct ata_port *ap);
314 static int nv_adma_slave_config(struct scsi_device *sdev);
315 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
316 static void nv_adma_qc_prep(struct ata_queued_cmd *qc);
317 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc);
318 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance);
319 static void nv_adma_irq_clear(struct ata_port *ap);
320 static int nv_adma_port_start(struct ata_port *ap);
321 static void nv_adma_port_stop(struct ata_port *ap);
323 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg);
324 static int nv_adma_port_resume(struct ata_port *ap);
326 static void nv_adma_freeze(struct ata_port *ap);
327 static void nv_adma_thaw(struct ata_port *ap);
328 static void nv_adma_error_handler(struct ata_port *ap);
329 static void nv_adma_host_stop(struct ata_host *host);
330 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc);
331 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
333 static void nv_mcp55_thaw(struct ata_port *ap);
334 static void nv_mcp55_freeze(struct ata_port *ap);
335 static void nv_swncq_error_handler(struct ata_port *ap);
336 static int nv_swncq_slave_config(struct scsi_device *sdev);
337 static int nv_swncq_port_start(struct ata_port *ap);
338 static void nv_swncq_qc_prep(struct ata_queued_cmd *qc);
339 static void nv_swncq_fill_sg(struct ata_queued_cmd *qc);
340 static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc);
341 static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis);
342 static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance);
344 static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg);
345 static int nv_swncq_port_resume(struct ata_port *ap);
352 NFORCE3 = NFORCE2, /* NF2 == NF3 as far as sata_nv is concerned */
359 static const struct pci_device_id nv_pci_tbl[] = {
360 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), NFORCE2 },
361 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), NFORCE3 },
362 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), NFORCE3 },
363 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA), CK804 },
364 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2), CK804 },
365 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA), CK804 },
366 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2), CK804 },
367 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA), MCP5x },
368 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2), MCP5x },
369 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA), MCP5x },
370 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2), MCP5x },
371 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA), GENERIC },
372 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2), GENERIC },
373 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3), GENERIC },
375 { } /* terminate list */
378 static struct pci_driver nv_pci_driver = {
380 .id_table = nv_pci_tbl,
381 .probe = nv_init_one,
383 .suspend = ata_pci_device_suspend,
384 .resume = nv_pci_device_resume,
386 .remove = ata_pci_remove_one,
389 static struct scsi_host_template nv_sht = {
390 ATA_BMDMA_SHT(DRV_NAME),
393 static struct scsi_host_template nv_adma_sht = {
394 ATA_NCQ_SHT(DRV_NAME),
395 .can_queue = NV_ADMA_MAX_CPBS,
396 .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN,
397 .dma_boundary = NV_ADMA_DMA_BOUNDARY,
398 .slave_configure = nv_adma_slave_config,
401 static struct scsi_host_template nv_swncq_sht = {
402 ATA_NCQ_SHT(DRV_NAME),
403 .can_queue = ATA_MAX_QUEUE,
404 .sg_tablesize = LIBATA_MAX_PRD,
405 .dma_boundary = ATA_DMA_BOUNDARY,
406 .slave_configure = nv_swncq_slave_config,
409 static struct ata_port_operations nv_common_ops = {
410 .inherits = &ata_bmdma_port_ops,
411 .scr_read = nv_scr_read,
412 .scr_write = nv_scr_write,
415 /* OSDL bz11195 reports that link doesn't come online after hardreset
416 * on generic nv's and there have been several other similar reports
417 * on linux-ide. Disable hardreset for generic nv's.
419 static struct ata_port_operations nv_generic_ops = {
420 .inherits = &nv_common_ops,
421 .hardreset = ATA_OP_NULL,
424 /* OSDL bz3352 reports that nf2/3 controllers can't determine device
425 * signature reliably. Also, the following thread reports detection
426 * failure on cold boot with the standard debouncing timing.
428 * http://thread.gmane.org/gmane.linux.ide/34098
430 * Debounce with hotplug timing and request follow-up SRST.
432 static struct ata_port_operations nv_nf2_ops = {
433 .inherits = &nv_common_ops,
434 .freeze = nv_nf2_freeze,
436 .hardreset = nv_noclassify_hardreset,
439 /* CK804 finally gets hardreset right */
440 static struct ata_port_operations nv_ck804_ops = {
441 .inherits = &nv_common_ops,
442 .freeze = nv_ck804_freeze,
443 .thaw = nv_ck804_thaw,
444 .host_stop = nv_ck804_host_stop,
447 static struct ata_port_operations nv_adma_ops = {
448 .inherits = &nv_ck804_ops,
450 .check_atapi_dma = nv_adma_check_atapi_dma,
451 .sff_tf_read = nv_adma_tf_read,
452 .qc_defer = ata_std_qc_defer,
453 .qc_prep = nv_adma_qc_prep,
454 .qc_issue = nv_adma_qc_issue,
455 .sff_irq_clear = nv_adma_irq_clear,
457 .freeze = nv_adma_freeze,
458 .thaw = nv_adma_thaw,
459 .error_handler = nv_adma_error_handler,
460 .post_internal_cmd = nv_adma_post_internal_cmd,
462 .port_start = nv_adma_port_start,
463 .port_stop = nv_adma_port_stop,
465 .port_suspend = nv_adma_port_suspend,
466 .port_resume = nv_adma_port_resume,
468 .host_stop = nv_adma_host_stop,
471 /* Kernel bz#12351 reports that when SWNCQ is enabled, for hotplug to
472 * work, hardreset should be used and hardreset can't report proper
473 * signature, which suggests that mcp5x is closer to nf2 as long as
474 * reset quirkiness is concerned. Define separate ops for mcp5x with
475 * nv_noclassify_hardreset().
477 static struct ata_port_operations nv_mcp5x_ops = {
478 .inherits = &nv_common_ops,
479 .hardreset = nv_noclassify_hardreset,
482 static struct ata_port_operations nv_swncq_ops = {
483 .inherits = &nv_mcp5x_ops,
485 .qc_defer = ata_std_qc_defer,
486 .qc_prep = nv_swncq_qc_prep,
487 .qc_issue = nv_swncq_qc_issue,
489 .freeze = nv_mcp55_freeze,
490 .thaw = nv_mcp55_thaw,
491 .error_handler = nv_swncq_error_handler,
494 .port_suspend = nv_swncq_port_suspend,
495 .port_resume = nv_swncq_port_resume,
497 .port_start = nv_swncq_port_start,
501 irq_handler_t irq_handler;
502 struct scsi_host_template *sht;
505 #define NV_PI_PRIV(_irq_handler, _sht) \
506 &(struct nv_pi_priv){ .irq_handler = _irq_handler, .sht = _sht }
508 static const struct ata_port_info nv_port_info[] = {
511 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
512 .pio_mask = NV_PIO_MASK,
513 .mwdma_mask = NV_MWDMA_MASK,
514 .udma_mask = NV_UDMA_MASK,
515 .port_ops = &nv_generic_ops,
516 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
520 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
521 .pio_mask = NV_PIO_MASK,
522 .mwdma_mask = NV_MWDMA_MASK,
523 .udma_mask = NV_UDMA_MASK,
524 .port_ops = &nv_nf2_ops,
525 .private_data = NV_PI_PRIV(nv_nf2_interrupt, &nv_sht),
529 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
530 .pio_mask = NV_PIO_MASK,
531 .mwdma_mask = NV_MWDMA_MASK,
532 .udma_mask = NV_UDMA_MASK,
533 .port_ops = &nv_ck804_ops,
534 .private_data = NV_PI_PRIV(nv_ck804_interrupt, &nv_sht),
538 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
539 ATA_FLAG_MMIO | ATA_FLAG_NCQ,
540 .pio_mask = NV_PIO_MASK,
541 .mwdma_mask = NV_MWDMA_MASK,
542 .udma_mask = NV_UDMA_MASK,
543 .port_ops = &nv_adma_ops,
544 .private_data = NV_PI_PRIV(nv_adma_interrupt, &nv_adma_sht),
548 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
549 .pio_mask = NV_PIO_MASK,
550 .mwdma_mask = NV_MWDMA_MASK,
551 .udma_mask = NV_UDMA_MASK,
552 .port_ops = &nv_mcp5x_ops,
553 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
557 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
559 .pio_mask = NV_PIO_MASK,
560 .mwdma_mask = NV_MWDMA_MASK,
561 .udma_mask = NV_UDMA_MASK,
562 .port_ops = &nv_swncq_ops,
563 .private_data = NV_PI_PRIV(nv_swncq_interrupt, &nv_swncq_sht),
567 MODULE_AUTHOR("NVIDIA");
568 MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller");
569 MODULE_LICENSE("GPL");
570 MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
571 MODULE_VERSION(DRV_VERSION);
573 static int adma_enabled;
574 static int swncq_enabled = 1;
576 static void nv_adma_register_mode(struct ata_port *ap)
578 struct nv_adma_port_priv *pp = ap->private_data;
579 void __iomem *mmio = pp->ctl_block;
583 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
586 status = readw(mmio + NV_ADMA_STAT);
587 while (!(status & NV_ADMA_STAT_IDLE) && count < 20) {
589 status = readw(mmio + NV_ADMA_STAT);
593 ata_port_printk(ap, KERN_WARNING,
594 "timeout waiting for ADMA IDLE, stat=0x%hx\n",
597 tmp = readw(mmio + NV_ADMA_CTL);
598 writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
601 status = readw(mmio + NV_ADMA_STAT);
602 while (!(status & NV_ADMA_STAT_LEGACY) && count < 20) {
604 status = readw(mmio + NV_ADMA_STAT);
608 ata_port_printk(ap, KERN_WARNING,
609 "timeout waiting for ADMA LEGACY, stat=0x%hx\n",
612 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
615 static void nv_adma_mode(struct ata_port *ap)
617 struct nv_adma_port_priv *pp = ap->private_data;
618 void __iomem *mmio = pp->ctl_block;
622 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE))
625 WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
627 tmp = readw(mmio + NV_ADMA_CTL);
628 writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
630 status = readw(mmio + NV_ADMA_STAT);
631 while (((status & NV_ADMA_STAT_LEGACY) ||
632 !(status & NV_ADMA_STAT_IDLE)) && count < 20) {
634 status = readw(mmio + NV_ADMA_STAT);
638 ata_port_printk(ap, KERN_WARNING,
639 "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n",
642 pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE;
645 static int nv_adma_slave_config(struct scsi_device *sdev)
647 struct ata_port *ap = ata_shost_to_port(sdev->host);
648 struct nv_adma_port_priv *pp = ap->private_data;
649 struct nv_adma_port_priv *port0, *port1;
650 struct scsi_device *sdev0, *sdev1;
651 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
652 unsigned long segment_boundary, flags;
653 unsigned short sg_tablesize;
656 u32 current_reg, new_reg, config_mask;
658 rc = ata_scsi_slave_config(sdev);
660 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
661 /* Not a proper libata device, ignore */
664 spin_lock_irqsave(ap->lock, flags);
666 if (ap->link.device[sdev->id].class == ATA_DEV_ATAPI) {
668 * NVIDIA reports that ADMA mode does not support ATAPI commands.
669 * Therefore ATAPI commands are sent through the legacy interface.
670 * However, the legacy interface only supports 32-bit DMA.
671 * Restrict DMA parameters as required by the legacy interface
672 * when an ATAPI device is connected.
674 segment_boundary = ATA_DMA_BOUNDARY;
675 /* Subtract 1 since an extra entry may be needed for padding, see
677 sg_tablesize = LIBATA_MAX_PRD - 1;
679 /* Since the legacy DMA engine is in use, we need to disable ADMA
682 nv_adma_register_mode(ap);
684 segment_boundary = NV_ADMA_DMA_BOUNDARY;
685 sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN;
689 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, ¤t_reg);
691 if (ap->port_no == 1)
692 config_mask = NV_MCP_SATA_CFG_20_PORT1_EN |
693 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
695 config_mask = NV_MCP_SATA_CFG_20_PORT0_EN |
696 NV_MCP_SATA_CFG_20_PORT0_PWB_EN;
699 new_reg = current_reg | config_mask;
700 pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE;
702 new_reg = current_reg & ~config_mask;
703 pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE;
706 if (current_reg != new_reg)
707 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg);
709 port0 = ap->host->ports[0]->private_data;
710 port1 = ap->host->ports[1]->private_data;
711 sdev0 = ap->host->ports[0]->link.device[0].sdev;
712 sdev1 = ap->host->ports[1]->link.device[0].sdev;
713 if ((port0->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
714 (port1->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)) {
715 /** We have to set the DMA mask to 32-bit if either port is in
716 ATAPI mode, since they are on the same PCI device which is
717 used for DMA mapping. If we set the mask we also need to set
718 the bounce limit on both ports to ensure that the block
719 layer doesn't feed addresses that cause DMA mapping to
720 choke. If either SCSI device is not allocated yet, it's OK
721 since that port will discover its correct setting when it
723 Note: Setting 32-bit mask should not fail. */
725 blk_queue_bounce_limit(sdev0->request_queue,
728 blk_queue_bounce_limit(sdev1->request_queue,
731 pci_set_dma_mask(pdev, ATA_DMA_MASK);
733 /** This shouldn't fail as it was set to this value before */
734 pci_set_dma_mask(pdev, pp->adma_dma_mask);
736 blk_queue_bounce_limit(sdev0->request_queue,
739 blk_queue_bounce_limit(sdev1->request_queue,
743 blk_queue_segment_boundary(sdev->request_queue, segment_boundary);
744 blk_queue_max_hw_segments(sdev->request_queue, sg_tablesize);
745 ata_port_printk(ap, KERN_INFO,
746 "DMA mask 0x%llX, segment boundary 0x%lX, hw segs %hu\n",
747 (unsigned long long)*ap->host->dev->dma_mask,
748 segment_boundary, sg_tablesize);
750 spin_unlock_irqrestore(ap->lock, flags);
755 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc)
757 struct nv_adma_port_priv *pp = qc->ap->private_data;
758 return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
761 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
763 /* Other than when internal or pass-through commands are executed,
764 the only time this function will be called in ADMA mode will be
765 if a command fails. In the failure case we don't care about going
766 into register mode with ADMA commands pending, as the commands will
767 all shortly be aborted anyway. We assume that NCQ commands are not
768 issued via passthrough, which is the only way that switching into
769 ADMA mode could abort outstanding commands. */
770 nv_adma_register_mode(ap);
772 ata_sff_tf_read(ap, tf);
775 static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb)
777 unsigned int idx = 0;
779 if (tf->flags & ATA_TFLAG_ISADDR) {
780 if (tf->flags & ATA_TFLAG_LBA48) {
781 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature | WNB);
782 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect);
783 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal);
784 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam);
785 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah);
786 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature);
788 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature | WNB);
790 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect);
791 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal);
792 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam);
793 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah);
796 if (tf->flags & ATA_TFLAG_DEVICE)
797 cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device);
799 cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND);
802 cpb[idx++] = cpu_to_le16(IGN);
807 static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
809 struct nv_adma_port_priv *pp = ap->private_data;
810 u8 flags = pp->cpb[cpb_num].resp_flags;
812 VPRINTK("CPB %d, flags=0x%x\n", cpb_num, flags);
814 if (unlikely((force_err ||
815 flags & (NV_CPB_RESP_ATA_ERR |
816 NV_CPB_RESP_CMD_ERR |
817 NV_CPB_RESP_CPB_ERR)))) {
818 struct ata_eh_info *ehi = &ap->link.eh_info;
821 ata_ehi_clear_desc(ehi);
822 __ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x: ", flags);
823 if (flags & NV_CPB_RESP_ATA_ERR) {
824 ata_ehi_push_desc(ehi, "ATA error");
825 ehi->err_mask |= AC_ERR_DEV;
826 } else if (flags & NV_CPB_RESP_CMD_ERR) {
827 ata_ehi_push_desc(ehi, "CMD error");
828 ehi->err_mask |= AC_ERR_DEV;
829 } else if (flags & NV_CPB_RESP_CPB_ERR) {
830 ata_ehi_push_desc(ehi, "CPB error");
831 ehi->err_mask |= AC_ERR_SYSTEM;
834 /* notifier error, but no error in CPB flags? */
835 ata_ehi_push_desc(ehi, "unknown");
836 ehi->err_mask |= AC_ERR_OTHER;
839 /* Kill all commands. EH will determine what actually failed. */
847 if (likely(flags & NV_CPB_RESP_DONE)) {
848 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, cpb_num);
849 VPRINTK("CPB flags done, flags=0x%x\n", flags);
851 DPRINTK("Completing qc from tag %d\n", cpb_num);
854 struct ata_eh_info *ehi = &ap->link.eh_info;
855 /* Notifier bits set without a command may indicate the drive
856 is misbehaving. Raise host state machine violation on this
858 ata_port_printk(ap, KERN_ERR,
859 "notifier for tag %d with no cmd?\n",
861 ehi->err_mask |= AC_ERR_HSM;
862 ehi->action |= ATA_EH_RESET;
870 static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
872 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
874 /* freeze if hotplugged */
875 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
880 /* bail out if not our interrupt */
881 if (!(irq_stat & NV_INT_DEV))
884 /* DEV interrupt w/ no active qc? */
885 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
886 ata_sff_check_status(ap);
890 /* handle interrupt */
891 return ata_sff_host_intr(ap, qc);
894 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
896 struct ata_host *host = dev_instance;
898 u32 notifier_clears[2];
900 spin_lock(&host->lock);
902 for (i = 0; i < host->n_ports; i++) {
903 struct ata_port *ap = host->ports[i];
904 notifier_clears[i] = 0;
906 if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
907 struct nv_adma_port_priv *pp = ap->private_data;
908 void __iomem *mmio = pp->ctl_block;
911 u32 notifier, notifier_error;
913 /* if ADMA is disabled, use standard ata interrupt handler */
914 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
915 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
916 >> (NV_INT_PORT_SHIFT * i);
917 handled += nv_host_intr(ap, irq_stat);
921 /* if in ATA register mode, check for standard interrupts */
922 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) {
923 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
924 >> (NV_INT_PORT_SHIFT * i);
925 if (ata_tag_valid(ap->link.active_tag))
926 /** NV_INT_DEV indication seems unreliable at times
927 at least in ADMA mode. Force it on always when a
928 command is active, to prevent losing interrupts. */
929 irq_stat |= NV_INT_DEV;
930 handled += nv_host_intr(ap, irq_stat);
933 notifier = readl(mmio + NV_ADMA_NOTIFIER);
934 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
935 notifier_clears[i] = notifier | notifier_error;
937 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
939 if (!NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier &&
944 status = readw(mmio + NV_ADMA_STAT);
946 /* Clear status. Ensure the controller sees the clearing before we start
947 looking at any of the CPB statuses, so that any CPB completions after
948 this point in the handler will raise another interrupt. */
949 writew(status, mmio + NV_ADMA_STAT);
950 readw(mmio + NV_ADMA_STAT); /* flush posted write */
953 handled++; /* irq handled if we got here */
955 /* freeze if hotplugged or controller error */
956 if (unlikely(status & (NV_ADMA_STAT_HOTPLUG |
957 NV_ADMA_STAT_HOTUNPLUG |
958 NV_ADMA_STAT_TIMEOUT |
959 NV_ADMA_STAT_SERROR))) {
960 struct ata_eh_info *ehi = &ap->link.eh_info;
962 ata_ehi_clear_desc(ehi);
963 __ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status);
964 if (status & NV_ADMA_STAT_TIMEOUT) {
965 ehi->err_mask |= AC_ERR_SYSTEM;
966 ata_ehi_push_desc(ehi, "timeout");
967 } else if (status & NV_ADMA_STAT_HOTPLUG) {
968 ata_ehi_hotplugged(ehi);
969 ata_ehi_push_desc(ehi, "hotplug");
970 } else if (status & NV_ADMA_STAT_HOTUNPLUG) {
971 ata_ehi_hotplugged(ehi);
972 ata_ehi_push_desc(ehi, "hot unplug");
973 } else if (status & NV_ADMA_STAT_SERROR) {
974 /* let libata analyze SError and figure out the cause */
975 ata_ehi_push_desc(ehi, "SError");
977 ata_ehi_push_desc(ehi, "unknown");
982 if (status & (NV_ADMA_STAT_DONE |
983 NV_ADMA_STAT_CPBERR |
984 NV_ADMA_STAT_CMD_COMPLETE)) {
985 u32 check_commands = notifier_clears[i];
988 if (status & NV_ADMA_STAT_CPBERR) {
989 /* Check all active commands */
990 if (ata_tag_valid(ap->link.active_tag))
991 check_commands = 1 <<
994 check_commands = ap->
998 /** Check CPBs for completed commands */
999 while ((pos = ffs(check_commands)) && !error) {
1001 error = nv_adma_check_cpb(ap, pos,
1002 notifier_error & (1 << pos));
1003 check_commands &= ~(1 << pos);
1009 if (notifier_clears[0] || notifier_clears[1]) {
1010 /* Note: Both notifier clear registers must be written
1011 if either is set, even if one is zero, according to NVIDIA. */
1012 struct nv_adma_port_priv *pp = host->ports[0]->private_data;
1013 writel(notifier_clears[0], pp->notifier_clear_block);
1014 pp = host->ports[1]->private_data;
1015 writel(notifier_clears[1], pp->notifier_clear_block);
1018 spin_unlock(&host->lock);
1020 return IRQ_RETVAL(handled);
1023 static void nv_adma_freeze(struct ata_port *ap)
1025 struct nv_adma_port_priv *pp = ap->private_data;
1026 void __iomem *mmio = pp->ctl_block;
1029 nv_ck804_freeze(ap);
1031 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1034 /* clear any outstanding CK804 notifications */
1035 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
1036 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1038 /* Disable interrupt */
1039 tmp = readw(mmio + NV_ADMA_CTL);
1040 writew(tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
1041 mmio + NV_ADMA_CTL);
1042 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1045 static void nv_adma_thaw(struct ata_port *ap)
1047 struct nv_adma_port_priv *pp = ap->private_data;
1048 void __iomem *mmio = pp->ctl_block;
1053 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1056 /* Enable interrupt */
1057 tmp = readw(mmio + NV_ADMA_CTL);
1058 writew(tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
1059 mmio + NV_ADMA_CTL);
1060 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1063 static void nv_adma_irq_clear(struct ata_port *ap)
1065 struct nv_adma_port_priv *pp = ap->private_data;
1066 void __iomem *mmio = pp->ctl_block;
1067 u32 notifier_clears[2];
1069 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
1070 ata_sff_irq_clear(ap);
1074 /* clear any outstanding CK804 notifications */
1075 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
1076 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1078 /* clear ADMA status */
1079 writew(0xffff, mmio + NV_ADMA_STAT);
1081 /* clear notifiers - note both ports need to be written with
1082 something even though we are only clearing on one */
1083 if (ap->port_no == 0) {
1084 notifier_clears[0] = 0xFFFFFFFF;
1085 notifier_clears[1] = 0;
1087 notifier_clears[0] = 0;
1088 notifier_clears[1] = 0xFFFFFFFF;
1090 pp = ap->host->ports[0]->private_data;
1091 writel(notifier_clears[0], pp->notifier_clear_block);
1092 pp = ap->host->ports[1]->private_data;
1093 writel(notifier_clears[1], pp->notifier_clear_block);
1096 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc)
1098 struct nv_adma_port_priv *pp = qc->ap->private_data;
1100 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
1101 ata_sff_post_internal_cmd(qc);
1104 static int nv_adma_port_start(struct ata_port *ap)
1106 struct device *dev = ap->host->dev;
1107 struct nv_adma_port_priv *pp;
1112 struct pci_dev *pdev = to_pci_dev(dev);
1117 /* Ensure DMA mask is set to 32-bit before allocating legacy PRD and
1119 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1122 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1126 rc = ata_port_start(ap);
1130 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1134 mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT +
1135 ap->port_no * NV_ADMA_PORT_SIZE;
1136 pp->ctl_block = mmio;
1137 pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN;
1138 pp->notifier_clear_block = pp->gen_block +
1139 NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no);
1141 /* Now that the legacy PRD and padding buffer are allocated we can
1142 safely raise the DMA mask to allocate the CPB/APRD table.
1143 These are allowed to fail since we store the value that ends up
1144 being used to set as the bounce limit in slave_config later if
1146 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1147 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1148 pp->adma_dma_mask = *dev->dma_mask;
1150 mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,
1151 &mem_dma, GFP_KERNEL);
1154 memset(mem, 0, NV_ADMA_PORT_PRIV_DMA_SZ);
1157 * First item in chunk of DMA memory:
1158 * 128-byte command parameter block (CPB)
1159 * one for each command tag
1162 pp->cpb_dma = mem_dma;
1164 writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1165 writel((mem_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1167 mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1168 mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1171 * Second item: block of ADMA_SGTBL_LEN s/g entries
1174 pp->aprd_dma = mem_dma;
1176 ap->private_data = pp;
1178 /* clear any outstanding interrupt conditions */
1179 writew(0xffff, mmio + NV_ADMA_STAT);
1181 /* initialize port variables */
1182 pp->flags = NV_ADMA_PORT_REGISTER_MODE;
1184 /* clear CPB fetch count */
1185 writew(0, mmio + NV_ADMA_CPB_COUNT);
1187 /* clear GO for register mode, enable interrupt */
1188 tmp = readw(mmio + NV_ADMA_CTL);
1189 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1190 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1192 tmp = readw(mmio + NV_ADMA_CTL);
1193 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1194 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1196 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1197 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1202 static void nv_adma_port_stop(struct ata_port *ap)
1204 struct nv_adma_port_priv *pp = ap->private_data;
1205 void __iomem *mmio = pp->ctl_block;
1208 writew(0, mmio + NV_ADMA_CTL);
1212 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg)
1214 struct nv_adma_port_priv *pp = ap->private_data;
1215 void __iomem *mmio = pp->ctl_block;
1217 /* Go to register mode - clears GO */
1218 nv_adma_register_mode(ap);
1220 /* clear CPB fetch count */
1221 writew(0, mmio + NV_ADMA_CPB_COUNT);
1223 /* disable interrupt, shut down port */
1224 writew(0, mmio + NV_ADMA_CTL);
1229 static int nv_adma_port_resume(struct ata_port *ap)
1231 struct nv_adma_port_priv *pp = ap->private_data;
1232 void __iomem *mmio = pp->ctl_block;
1235 /* set CPB block location */
1236 writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1237 writel((pp->cpb_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1239 /* clear any outstanding interrupt conditions */
1240 writew(0xffff, mmio + NV_ADMA_STAT);
1242 /* initialize port variables */
1243 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
1245 /* clear CPB fetch count */
1246 writew(0, mmio + NV_ADMA_CPB_COUNT);
1248 /* clear GO for register mode, enable interrupt */
1249 tmp = readw(mmio + NV_ADMA_CTL);
1250 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1251 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1253 tmp = readw(mmio + NV_ADMA_CTL);
1254 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1255 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1257 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1258 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1264 static void nv_adma_setup_port(struct ata_port *ap)
1266 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1267 struct ata_ioports *ioport = &ap->ioaddr;
1271 mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE;
1273 ioport->cmd_addr = mmio;
1274 ioport->data_addr = mmio + (ATA_REG_DATA * 4);
1275 ioport->error_addr =
1276 ioport->feature_addr = mmio + (ATA_REG_ERR * 4);
1277 ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4);
1278 ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4);
1279 ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4);
1280 ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4);
1281 ioport->device_addr = mmio + (ATA_REG_DEVICE * 4);
1282 ioport->status_addr =
1283 ioport->command_addr = mmio + (ATA_REG_STATUS * 4);
1284 ioport->altstatus_addr =
1285 ioport->ctl_addr = mmio + 0x20;
1288 static int nv_adma_host_init(struct ata_host *host)
1290 struct pci_dev *pdev = to_pci_dev(host->dev);
1296 /* enable ADMA on the ports */
1297 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1298 tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN |
1299 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1300 NV_MCP_SATA_CFG_20_PORT1_EN |
1301 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
1303 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1305 for (i = 0; i < host->n_ports; i++)
1306 nv_adma_setup_port(host->ports[i]);
1311 static void nv_adma_fill_aprd(struct ata_queued_cmd *qc,
1312 struct scatterlist *sg,
1314 struct nv_adma_prd *aprd)
1317 if (qc->tf.flags & ATA_TFLAG_WRITE)
1318 flags |= NV_APRD_WRITE;
1319 if (idx == qc->n_elem - 1)
1320 flags |= NV_APRD_END;
1322 flags |= NV_APRD_CONT;
1324 aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg)));
1325 aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */
1326 aprd->flags = flags;
1327 aprd->packet_len = 0;
1330 static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb)
1332 struct nv_adma_port_priv *pp = qc->ap->private_data;
1333 struct nv_adma_prd *aprd;
1334 struct scatterlist *sg;
1339 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1340 aprd = (si < 5) ? &cpb->aprd[si] :
1341 &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (si-5)];
1342 nv_adma_fill_aprd(qc, sg, si, aprd);
1345 cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->tag)));
1347 cpb->next_aprd = cpu_to_le64(0);
1350 static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc)
1352 struct nv_adma_port_priv *pp = qc->ap->private_data;
1354 /* ADMA engine can only be used for non-ATAPI DMA commands,
1355 or interrupt-driven no-data commands. */
1356 if ((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
1357 (qc->tf.flags & ATA_TFLAG_POLLING))
1360 if ((qc->flags & ATA_QCFLAG_DMAMAP) ||
1361 (qc->tf.protocol == ATA_PROT_NODATA))
1367 static void nv_adma_qc_prep(struct ata_queued_cmd *qc)
1369 struct nv_adma_port_priv *pp = qc->ap->private_data;
1370 struct nv_adma_cpb *cpb = &pp->cpb[qc->tag];
1371 u8 ctl_flags = NV_CPB_CTL_CPB_VALID |
1374 if (nv_adma_use_reg_mode(qc)) {
1375 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1376 (qc->flags & ATA_QCFLAG_DMAMAP));
1377 nv_adma_register_mode(qc->ap);
1378 ata_sff_qc_prep(qc);
1382 cpb->resp_flags = NV_CPB_RESP_DONE;
1389 cpb->next_cpb_idx = 0;
1391 /* turn on NCQ flags for NCQ commands */
1392 if (qc->tf.protocol == ATA_PROT_NCQ)
1393 ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA;
1395 VPRINTK("qc->flags = 0x%lx\n", qc->flags);
1397 nv_adma_tf_to_cpb(&qc->tf, cpb->tf);
1399 if (qc->flags & ATA_QCFLAG_DMAMAP) {
1400 nv_adma_fill_sg(qc, cpb);
1401 ctl_flags |= NV_CPB_CTL_APRD_VALID;
1403 memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5);
1405 /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID
1406 until we are finished filling in all of the contents */
1408 cpb->ctl_flags = ctl_flags;
1410 cpb->resp_flags = 0;
1413 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc)
1415 struct nv_adma_port_priv *pp = qc->ap->private_data;
1416 void __iomem *mmio = pp->ctl_block;
1417 int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ);
1421 /* We can't handle result taskfile with NCQ commands, since
1422 retrieving the taskfile switches us out of ADMA mode and would abort
1423 existing commands. */
1424 if (unlikely(qc->tf.protocol == ATA_PROT_NCQ &&
1425 (qc->flags & ATA_QCFLAG_RESULT_TF))) {
1426 ata_dev_printk(qc->dev, KERN_ERR,
1427 "NCQ w/ RESULT_TF not allowed\n");
1428 return AC_ERR_SYSTEM;
1431 if (nv_adma_use_reg_mode(qc)) {
1432 /* use ATA register mode */
1433 VPRINTK("using ATA register mode: 0x%lx\n", qc->flags);
1434 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1435 (qc->flags & ATA_QCFLAG_DMAMAP));
1436 nv_adma_register_mode(qc->ap);
1437 return ata_sff_qc_issue(qc);
1439 nv_adma_mode(qc->ap);
1441 /* write append register, command tag in lower 8 bits
1442 and (number of cpbs to append -1) in top 8 bits */
1445 if (curr_ncq != pp->last_issue_ncq) {
1446 /* Seems to need some delay before switching between NCQ and
1447 non-NCQ commands, else we get command timeouts and such. */
1449 pp->last_issue_ncq = curr_ncq;
1452 writew(qc->tag, mmio + NV_ADMA_APPEND);
1454 DPRINTK("Issued tag %u\n", qc->tag);
1459 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
1461 struct ata_host *host = dev_instance;
1463 unsigned int handled = 0;
1464 unsigned long flags;
1466 spin_lock_irqsave(&host->lock, flags);
1468 for (i = 0; i < host->n_ports; i++) {
1469 struct ata_port *ap;
1471 ap = host->ports[i];
1473 !(ap->flags & ATA_FLAG_DISABLED)) {
1474 struct ata_queued_cmd *qc;
1476 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1477 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
1478 handled += ata_sff_host_intr(ap, qc);
1480 // No request pending? Clear interrupt status
1481 // anyway, in case there's one pending.
1482 ap->ops->sff_check_status(ap);
1487 spin_unlock_irqrestore(&host->lock, flags);
1489 return IRQ_RETVAL(handled);
1492 static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat)
1496 for (i = 0; i < host->n_ports; i++) {
1497 struct ata_port *ap = host->ports[i];
1499 if (ap && !(ap->flags & ATA_FLAG_DISABLED))
1500 handled += nv_host_intr(ap, irq_stat);
1502 irq_stat >>= NV_INT_PORT_SHIFT;
1505 return IRQ_RETVAL(handled);
1508 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance)
1510 struct ata_host *host = dev_instance;
1514 spin_lock(&host->lock);
1515 irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
1516 ret = nv_do_interrupt(host, irq_stat);
1517 spin_unlock(&host->lock);
1522 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
1524 struct ata_host *host = dev_instance;
1528 spin_lock(&host->lock);
1529 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1530 ret = nv_do_interrupt(host, irq_stat);
1531 spin_unlock(&host->lock);
1536 static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
1538 if (sc_reg > SCR_CONTROL)
1541 *val = ioread32(link->ap->ioaddr.scr_addr + (sc_reg * 4));
1545 static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
1547 if (sc_reg > SCR_CONTROL)
1550 iowrite32(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
1554 static int nv_noclassify_hardreset(struct ata_link *link, unsigned int *class,
1555 unsigned long deadline)
1560 rc = sata_link_hardreset(link, sata_deb_timing_hotplug, deadline,
1562 return online ? -EAGAIN : rc;
1565 static void nv_nf2_freeze(struct ata_port *ap)
1567 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1568 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1571 mask = ioread8(scr_addr + NV_INT_ENABLE);
1572 mask &= ~(NV_INT_ALL << shift);
1573 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1576 static void nv_nf2_thaw(struct ata_port *ap)
1578 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1579 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1582 iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
1584 mask = ioread8(scr_addr + NV_INT_ENABLE);
1585 mask |= (NV_INT_MASK << shift);
1586 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1589 static void nv_ck804_freeze(struct ata_port *ap)
1591 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1592 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1595 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1596 mask &= ~(NV_INT_ALL << shift);
1597 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1600 static void nv_ck804_thaw(struct ata_port *ap)
1602 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1603 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1606 writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
1608 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1609 mask |= (NV_INT_MASK << shift);
1610 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1613 static void nv_mcp55_freeze(struct ata_port *ap)
1615 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1616 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1619 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1621 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1622 mask &= ~(NV_INT_ALL_MCP55 << shift);
1623 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
1627 static void nv_mcp55_thaw(struct ata_port *ap)
1629 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1630 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1633 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1635 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1636 mask |= (NV_INT_MASK_MCP55 << shift);
1637 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
1641 static void nv_adma_error_handler(struct ata_port *ap)
1643 struct nv_adma_port_priv *pp = ap->private_data;
1644 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) {
1645 void __iomem *mmio = pp->ctl_block;
1649 if (ata_tag_valid(ap->link.active_tag) || ap->link.sactive) {
1650 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1651 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1652 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
1653 u32 status = readw(mmio + NV_ADMA_STAT);
1654 u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT);
1655 u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX);
1657 ata_port_printk(ap, KERN_ERR,
1658 "EH in ADMA mode, notifier 0x%X "
1659 "notifier_error 0x%X gen_ctl 0x%X status 0x%X "
1660 "next cpb count 0x%X next cpb idx 0x%x\n",
1661 notifier, notifier_error, gen_ctl, status,
1662 cpb_count, next_cpb_idx);
1664 for (i = 0; i < NV_ADMA_MAX_CPBS; i++) {
1665 struct nv_adma_cpb *cpb = &pp->cpb[i];
1666 if ((ata_tag_valid(ap->link.active_tag) && i == ap->link.active_tag) ||
1667 ap->link.sactive & (1 << i))
1668 ata_port_printk(ap, KERN_ERR,
1669 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1670 i, cpb->ctl_flags, cpb->resp_flags);
1674 /* Push us back into port register mode for error handling. */
1675 nv_adma_register_mode(ap);
1677 /* Mark all of the CPBs as invalid to prevent them from
1679 for (i = 0; i < NV_ADMA_MAX_CPBS; i++)
1680 pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID;
1682 /* clear CPB fetch count */
1683 writew(0, mmio + NV_ADMA_CPB_COUNT);
1686 tmp = readw(mmio + NV_ADMA_CTL);
1687 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1688 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1690 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1691 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1694 ata_sff_error_handler(ap);
1697 static void nv_swncq_qc_to_dq(struct ata_port *ap, struct ata_queued_cmd *qc)
1699 struct nv_swncq_port_priv *pp = ap->private_data;
1700 struct defer_queue *dq = &pp->defer_queue;
1703 WARN_ON(dq->tail - dq->head == ATA_MAX_QUEUE);
1704 dq->defer_bits |= (1 << qc->tag);
1705 dq->tag[dq->tail++ & (ATA_MAX_QUEUE - 1)] = qc->tag;
1708 static struct ata_queued_cmd *nv_swncq_qc_from_dq(struct ata_port *ap)
1710 struct nv_swncq_port_priv *pp = ap->private_data;
1711 struct defer_queue *dq = &pp->defer_queue;
1714 if (dq->head == dq->tail) /* null queue */
1717 tag = dq->tag[dq->head & (ATA_MAX_QUEUE - 1)];
1718 dq->tag[dq->head++ & (ATA_MAX_QUEUE - 1)] = ATA_TAG_POISON;
1719 WARN_ON(!(dq->defer_bits & (1 << tag)));
1720 dq->defer_bits &= ~(1 << tag);
1722 return ata_qc_from_tag(ap, tag);
1725 static void nv_swncq_fis_reinit(struct ata_port *ap)
1727 struct nv_swncq_port_priv *pp = ap->private_data;
1730 pp->dmafis_bits = 0;
1731 pp->sdbfis_bits = 0;
1735 static void nv_swncq_pp_reinit(struct ata_port *ap)
1737 struct nv_swncq_port_priv *pp = ap->private_data;
1738 struct defer_queue *dq = &pp->defer_queue;
1744 pp->last_issue_tag = ATA_TAG_POISON;
1745 nv_swncq_fis_reinit(ap);
1748 static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis)
1750 struct nv_swncq_port_priv *pp = ap->private_data;
1752 writew(fis, pp->irq_block);
1755 static void __ata_bmdma_stop(struct ata_port *ap)
1757 struct ata_queued_cmd qc;
1760 ata_bmdma_stop(&qc);
1763 static void nv_swncq_ncq_stop(struct ata_port *ap)
1765 struct nv_swncq_port_priv *pp = ap->private_data;
1770 ata_port_printk(ap, KERN_ERR,
1771 "EH in SWNCQ mode,QC:qc_active 0x%X sactive 0x%X\n",
1772 ap->qc_active, ap->link.sactive);
1773 ata_port_printk(ap, KERN_ERR,
1774 "SWNCQ:qc_active 0x%X defer_bits 0x%X last_issue_tag 0x%x\n "
1775 "dhfis 0x%X dmafis 0x%X sdbfis 0x%X\n",
1776 pp->qc_active, pp->defer_queue.defer_bits, pp->last_issue_tag,
1777 pp->dhfis_bits, pp->dmafis_bits, pp->sdbfis_bits);
1779 ata_port_printk(ap, KERN_ERR, "ATA_REG 0x%X ERR_REG 0x%X\n",
1780 ap->ops->sff_check_status(ap),
1781 ioread8(ap->ioaddr.error_addr));
1783 sactive = readl(pp->sactive_block);
1784 done_mask = pp->qc_active ^ sactive;
1786 ata_port_printk(ap, KERN_ERR, "tag : dhfis dmafis sdbfis sacitve\n");
1787 for (i = 0; i < ATA_MAX_QUEUE; i++) {
1789 if (pp->qc_active & (1 << i))
1791 else if (done_mask & (1 << i))
1796 ata_port_printk(ap, KERN_ERR,
1797 "tag 0x%x: %01x %01x %01x %01x %s\n", i,
1798 (pp->dhfis_bits >> i) & 0x1,
1799 (pp->dmafis_bits >> i) & 0x1,
1800 (pp->sdbfis_bits >> i) & 0x1,
1801 (sactive >> i) & 0x1,
1802 (err ? "error! tag doesn't exit" : " "));
1805 nv_swncq_pp_reinit(ap);
1806 ap->ops->sff_irq_clear(ap);
1807 __ata_bmdma_stop(ap);
1808 nv_swncq_irq_clear(ap, 0xffff);
1811 static void nv_swncq_error_handler(struct ata_port *ap)
1813 struct ata_eh_context *ehc = &ap->link.eh_context;
1815 if (ap->link.sactive) {
1816 nv_swncq_ncq_stop(ap);
1817 ehc->i.action |= ATA_EH_RESET;
1820 ata_sff_error_handler(ap);
1824 static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg)
1826 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1830 writel(~0, mmio + NV_INT_STATUS_MCP55);
1833 writel(0, mmio + NV_INT_ENABLE_MCP55);
1836 tmp = readl(mmio + NV_CTL_MCP55);
1837 tmp &= ~(NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ);
1838 writel(tmp, mmio + NV_CTL_MCP55);
1843 static int nv_swncq_port_resume(struct ata_port *ap)
1845 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1849 writel(~0, mmio + NV_INT_STATUS_MCP55);
1852 writel(0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1855 tmp = readl(mmio + NV_CTL_MCP55);
1856 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1862 static void nv_swncq_host_init(struct ata_host *host)
1865 void __iomem *mmio = host->iomap[NV_MMIO_BAR];
1866 struct pci_dev *pdev = to_pci_dev(host->dev);
1869 /* disable ECO 398 */
1870 pci_read_config_byte(pdev, 0x7f, ®val);
1871 regval &= ~(1 << 7);
1872 pci_write_config_byte(pdev, 0x7f, regval);
1875 tmp = readl(mmio + NV_CTL_MCP55);
1876 VPRINTK("HOST_CTL:0x%X\n", tmp);
1877 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1879 /* enable irq intr */
1880 tmp = readl(mmio + NV_INT_ENABLE_MCP55);
1881 VPRINTK("HOST_ENABLE:0x%X\n", tmp);
1882 writel(tmp | 0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1884 /* clear port irq */
1885 writel(~0x0, mmio + NV_INT_STATUS_MCP55);
1888 static int nv_swncq_slave_config(struct scsi_device *sdev)
1890 struct ata_port *ap = ata_shost_to_port(sdev->host);
1891 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
1892 struct ata_device *dev;
1895 u8 check_maxtor = 0;
1896 unsigned char model_num[ATA_ID_PROD_LEN + 1];
1898 rc = ata_scsi_slave_config(sdev);
1899 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
1900 /* Not a proper libata device, ignore */
1903 dev = &ap->link.device[sdev->id];
1904 if (!(ap->flags & ATA_FLAG_NCQ) || dev->class == ATA_DEV_ATAPI)
1907 /* if MCP51 and Maxtor, then disable ncq */
1908 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA ||
1909 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2)
1912 /* if MCP55 and rev <= a2 and Maxtor, then disable ncq */
1913 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA ||
1914 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2) {
1915 pci_read_config_byte(pdev, 0x8, &rev);
1923 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
1925 if (strncmp(model_num, "Maxtor", 6) == 0) {
1926 ata_scsi_change_queue_depth(sdev, 1);
1927 ata_dev_printk(dev, KERN_NOTICE,
1928 "Disabling SWNCQ mode (depth %x)\n", sdev->queue_depth);
1934 static int nv_swncq_port_start(struct ata_port *ap)
1936 struct device *dev = ap->host->dev;
1937 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1938 struct nv_swncq_port_priv *pp;
1941 rc = ata_port_start(ap);
1945 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1949 pp->prd = dmam_alloc_coherent(dev, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE,
1950 &pp->prd_dma, GFP_KERNEL);
1953 memset(pp->prd, 0, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE);
1955 ap->private_data = pp;
1956 pp->sactive_block = ap->ioaddr.scr_addr + 4 * SCR_ACTIVE;
1957 pp->irq_block = mmio + NV_INT_STATUS_MCP55 + ap->port_no * 2;
1958 pp->tag_block = mmio + NV_NCQ_REG_MCP55 + ap->port_no * 2;
1963 static void nv_swncq_qc_prep(struct ata_queued_cmd *qc)
1965 if (qc->tf.protocol != ATA_PROT_NCQ) {
1966 ata_sff_qc_prep(qc);
1970 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1973 nv_swncq_fill_sg(qc);
1976 static void nv_swncq_fill_sg(struct ata_queued_cmd *qc)
1978 struct ata_port *ap = qc->ap;
1979 struct scatterlist *sg;
1980 struct nv_swncq_port_priv *pp = ap->private_data;
1981 struct ata_prd *prd;
1982 unsigned int si, idx;
1984 prd = pp->prd + ATA_MAX_PRD * qc->tag;
1987 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1991 addr = (u32)sg_dma_address(sg);
1992 sg_len = sg_dma_len(sg);
1995 offset = addr & 0xffff;
1997 if ((offset + sg_len) > 0x10000)
1998 len = 0x10000 - offset;
2000 prd[idx].addr = cpu_to_le32(addr);
2001 prd[idx].flags_len = cpu_to_le32(len & 0xffff);
2009 prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
2012 static unsigned int nv_swncq_issue_atacmd(struct ata_port *ap,
2013 struct ata_queued_cmd *qc)
2015 struct nv_swncq_port_priv *pp = ap->private_data;
2022 writel((1 << qc->tag), pp->sactive_block);
2023 pp->last_issue_tag = qc->tag;
2024 pp->dhfis_bits &= ~(1 << qc->tag);
2025 pp->dmafis_bits &= ~(1 << qc->tag);
2026 pp->qc_active |= (0x1 << qc->tag);
2028 ap->ops->sff_tf_load(ap, &qc->tf); /* load tf registers */
2029 ap->ops->sff_exec_command(ap, &qc->tf);
2031 DPRINTK("Issued tag %u\n", qc->tag);
2036 static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc)
2038 struct ata_port *ap = qc->ap;
2039 struct nv_swncq_port_priv *pp = ap->private_data;
2041 if (qc->tf.protocol != ATA_PROT_NCQ)
2042 return ata_sff_qc_issue(qc);
2047 nv_swncq_issue_atacmd(ap, qc);
2049 nv_swncq_qc_to_dq(ap, qc); /* add qc to defer queue */
2054 static void nv_swncq_hotplug(struct ata_port *ap, u32 fis)
2057 struct ata_eh_info *ehi = &ap->link.eh_info;
2059 ata_ehi_clear_desc(ehi);
2061 /* AHCI needs SError cleared; otherwise, it might lock up */
2062 sata_scr_read(&ap->link, SCR_ERROR, &serror);
2063 sata_scr_write(&ap->link, SCR_ERROR, serror);
2065 /* analyze @irq_stat */
2066 if (fis & NV_SWNCQ_IRQ_ADDED)
2067 ata_ehi_push_desc(ehi, "hot plug");
2068 else if (fis & NV_SWNCQ_IRQ_REMOVED)
2069 ata_ehi_push_desc(ehi, "hot unplug");
2071 ata_ehi_hotplugged(ehi);
2073 /* okay, let's hand over to EH */
2074 ehi->serror |= serror;
2076 ata_port_freeze(ap);
2079 static int nv_swncq_sdbfis(struct ata_port *ap)
2081 struct ata_queued_cmd *qc;
2082 struct nv_swncq_port_priv *pp = ap->private_data;
2083 struct ata_eh_info *ehi = &ap->link.eh_info;
2091 host_stat = ap->ops->bmdma_status(ap);
2092 if (unlikely(host_stat & ATA_DMA_ERR)) {
2093 /* error when transfering data to/from memory */
2094 ata_ehi_clear_desc(ehi);
2095 ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat);
2096 ehi->err_mask |= AC_ERR_HOST_BUS;
2097 ehi->action |= ATA_EH_RESET;
2101 ap->ops->sff_irq_clear(ap);
2102 __ata_bmdma_stop(ap);
2104 sactive = readl(pp->sactive_block);
2105 done_mask = pp->qc_active ^ sactive;
2107 if (unlikely(done_mask & sactive)) {
2108 ata_ehi_clear_desc(ehi);
2109 ata_ehi_push_desc(ehi, "illegal SWNCQ:qc_active transition"
2110 "(%08x->%08x)", pp->qc_active, sactive);
2111 ehi->err_mask |= AC_ERR_HSM;
2112 ehi->action |= ATA_EH_RESET;
2115 for (i = 0; i < ATA_MAX_QUEUE; i++) {
2116 if (!(done_mask & (1 << i)))
2119 qc = ata_qc_from_tag(ap, i);
2121 ata_qc_complete(qc);
2122 pp->qc_active &= ~(1 << i);
2123 pp->dhfis_bits &= ~(1 << i);
2124 pp->dmafis_bits &= ~(1 << i);
2125 pp->sdbfis_bits |= (1 << i);
2130 if (!ap->qc_active) {
2132 nv_swncq_pp_reinit(ap);
2136 if (pp->qc_active & pp->dhfis_bits)
2139 if ((pp->ncq_flags & ncq_saw_backout) ||
2140 (pp->qc_active ^ pp->dhfis_bits))
2141 /* if the controller cann't get a device to host register FIS,
2142 * The driver needs to reissue the new command.
2146 DPRINTK("id 0x%x QC: qc_active 0x%x,"
2147 "SWNCQ:qc_active 0x%X defer_bits %X "
2148 "dhfis 0x%X dmafis 0x%X last_issue_tag %x\n",
2149 ap->print_id, ap->qc_active, pp->qc_active,
2150 pp->defer_queue.defer_bits, pp->dhfis_bits,
2151 pp->dmafis_bits, pp->last_issue_tag);
2153 nv_swncq_fis_reinit(ap);
2156 qc = ata_qc_from_tag(ap, pp->last_issue_tag);
2157 nv_swncq_issue_atacmd(ap, qc);
2161 if (pp->defer_queue.defer_bits) {
2162 /* send deferral queue command */
2163 qc = nv_swncq_qc_from_dq(ap);
2164 WARN_ON(qc == NULL);
2165 nv_swncq_issue_atacmd(ap, qc);
2171 static inline u32 nv_swncq_tag(struct ata_port *ap)
2173 struct nv_swncq_port_priv *pp = ap->private_data;
2176 tag = readb(pp->tag_block) >> 2;
2177 return (tag & 0x1f);
2180 static int nv_swncq_dmafis(struct ata_port *ap)
2182 struct ata_queued_cmd *qc;
2186 struct nv_swncq_port_priv *pp = ap->private_data;
2188 __ata_bmdma_stop(ap);
2189 tag = nv_swncq_tag(ap);
2191 DPRINTK("dma setup tag 0x%x\n", tag);
2192 qc = ata_qc_from_tag(ap, tag);
2197 rw = qc->tf.flags & ATA_TFLAG_WRITE;
2199 /* load PRD table addr. */
2200 iowrite32(pp->prd_dma + ATA_PRD_TBL_SZ * qc->tag,
2201 ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
2203 /* specify data direction, triple-check start bit is clear */
2204 dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2205 dmactl &= ~ATA_DMA_WR;
2207 dmactl |= ATA_DMA_WR;
2209 iowrite8(dmactl | ATA_DMA_START, ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2214 static void nv_swncq_host_interrupt(struct ata_port *ap, u16 fis)
2216 struct nv_swncq_port_priv *pp = ap->private_data;
2217 struct ata_queued_cmd *qc;
2218 struct ata_eh_info *ehi = &ap->link.eh_info;
2223 ata_stat = ap->ops->sff_check_status(ap);
2224 nv_swncq_irq_clear(ap, fis);
2228 if (ap->pflags & ATA_PFLAG_FROZEN)
2231 if (fis & NV_SWNCQ_IRQ_HOTPLUG) {
2232 nv_swncq_hotplug(ap, fis);
2239 if (ap->ops->scr_read(&ap->link, SCR_ERROR, &serror))
2241 ap->ops->scr_write(&ap->link, SCR_ERROR, serror);
2243 if (ata_stat & ATA_ERR) {
2244 ata_ehi_clear_desc(ehi);
2245 ata_ehi_push_desc(ehi, "Ata error. fis:0x%X", fis);
2246 ehi->err_mask |= AC_ERR_DEV;
2247 ehi->serror |= serror;
2248 ehi->action |= ATA_EH_RESET;
2249 ata_port_freeze(ap);
2253 if (fis & NV_SWNCQ_IRQ_BACKOUT) {
2254 /* If the IRQ is backout, driver must issue
2255 * the new command again some time later.
2257 pp->ncq_flags |= ncq_saw_backout;
2260 if (fis & NV_SWNCQ_IRQ_SDBFIS) {
2261 pp->ncq_flags |= ncq_saw_sdb;
2262 DPRINTK("id 0x%x SWNCQ: qc_active 0x%X "
2263 "dhfis 0x%X dmafis 0x%X sactive 0x%X\n",
2264 ap->print_id, pp->qc_active, pp->dhfis_bits,
2265 pp->dmafis_bits, readl(pp->sactive_block));
2266 rc = nv_swncq_sdbfis(ap);
2271 if (fis & NV_SWNCQ_IRQ_DHREGFIS) {
2272 /* The interrupt indicates the new command
2273 * was transmitted correctly to the drive.
2275 pp->dhfis_bits |= (0x1 << pp->last_issue_tag);
2276 pp->ncq_flags |= ncq_saw_d2h;
2277 if (pp->ncq_flags & (ncq_saw_sdb | ncq_saw_backout)) {
2278 ata_ehi_push_desc(ehi, "illegal fis transaction");
2279 ehi->err_mask |= AC_ERR_HSM;
2280 ehi->action |= ATA_EH_RESET;
2284 if (!(fis & NV_SWNCQ_IRQ_DMASETUP) &&
2285 !(pp->ncq_flags & ncq_saw_dmas)) {
2286 ata_stat = ap->ops->sff_check_status(ap);
2287 if (ata_stat & ATA_BUSY)
2290 if (pp->defer_queue.defer_bits) {
2291 DPRINTK("send next command\n");
2292 qc = nv_swncq_qc_from_dq(ap);
2293 nv_swncq_issue_atacmd(ap, qc);
2298 if (fis & NV_SWNCQ_IRQ_DMASETUP) {
2299 /* program the dma controller with appropriate PRD buffers
2300 * and start the DMA transfer for requested command.
2302 pp->dmafis_bits |= (0x1 << nv_swncq_tag(ap));
2303 pp->ncq_flags |= ncq_saw_dmas;
2304 rc = nv_swncq_dmafis(ap);
2310 ata_ehi_push_desc(ehi, "fis:0x%x", fis);
2311 ata_port_freeze(ap);
2315 static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance)
2317 struct ata_host *host = dev_instance;
2319 unsigned int handled = 0;
2320 unsigned long flags;
2323 spin_lock_irqsave(&host->lock, flags);
2325 irq_stat = readl(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_MCP55);
2327 for (i = 0; i < host->n_ports; i++) {
2328 struct ata_port *ap = host->ports[i];
2330 if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
2331 if (ap->link.sactive) {
2332 nv_swncq_host_interrupt(ap, (u16)irq_stat);
2335 if (irq_stat) /* reserve Hotplug */
2336 nv_swncq_irq_clear(ap, 0xfff0);
2338 handled += nv_host_intr(ap, (u8)irq_stat);
2341 irq_stat >>= NV_INT_PORT_SHIFT_MCP55;
2344 spin_unlock_irqrestore(&host->lock, flags);
2346 return IRQ_RETVAL(handled);
2349 static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2351 static int printed_version;
2352 const struct ata_port_info *ppi[] = { NULL, NULL };
2353 struct nv_pi_priv *ipriv;
2354 struct ata_host *host;
2355 struct nv_host_priv *hpriv;
2359 unsigned long type = ent->driver_data;
2361 // Make sure this is a SATA controller by counting the number of bars
2362 // (NVIDIA SATA controllers will always have six bars). Otherwise,
2363 // it's an IDE controller and we ignore it.
2364 for (bar = 0; bar < 6; bar++)
2365 if (pci_resource_start(pdev, bar) == 0)
2368 if (!printed_version++)
2369 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
2371 rc = pcim_enable_device(pdev);
2375 /* determine type and allocate host */
2376 if (type == CK804 && adma_enabled) {
2377 dev_printk(KERN_NOTICE, &pdev->dev, "Using ADMA mode\n");
2379 } else if (type == MCP5x && swncq_enabled) {
2380 dev_printk(KERN_NOTICE, &pdev->dev, "Using SWNCQ mode\n");
2384 ppi[0] = &nv_port_info[type];
2385 ipriv = ppi[0]->private_data;
2386 rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
2390 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
2394 host->private_data = hpriv;
2396 /* request and iomap NV_MMIO_BAR */
2397 rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME);
2401 /* configure SCR access */
2402 base = host->iomap[NV_MMIO_BAR];
2403 host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
2404 host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
2406 /* enable SATA space for CK804 */
2407 if (type >= CK804) {
2410 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2411 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2412 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2417 rc = nv_adma_host_init(host);
2420 } else if (type == SWNCQ)
2421 nv_swncq_host_init(host);
2423 pci_set_master(pdev);
2424 return ata_host_activate(host, pdev->irq, ipriv->irq_handler,
2425 IRQF_SHARED, ipriv->sht);
2429 static int nv_pci_device_resume(struct pci_dev *pdev)
2431 struct ata_host *host = dev_get_drvdata(&pdev->dev);
2432 struct nv_host_priv *hpriv = host->private_data;
2435 rc = ata_pci_device_do_resume(pdev);
2439 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
2440 if (hpriv->type >= CK804) {
2443 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2444 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2445 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2447 if (hpriv->type == ADMA) {
2449 struct nv_adma_port_priv *pp;
2450 /* enable/disable ADMA on the ports appropriately */
2451 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2453 pp = host->ports[0]->private_data;
2454 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
2455 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2456 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
2458 tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN |
2459 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
2460 pp = host->ports[1]->private_data;
2461 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
2462 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN |
2463 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2465 tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN |
2466 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2468 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2472 ata_host_resume(host);
2478 static void nv_ck804_host_stop(struct ata_host *host)
2480 struct pci_dev *pdev = to_pci_dev(host->dev);
2483 /* disable SATA space for CK804 */
2484 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2485 regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2486 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2489 static void nv_adma_host_stop(struct ata_host *host)
2491 struct pci_dev *pdev = to_pci_dev(host->dev);
2494 /* disable ADMA on the ports */
2495 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2496 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2497 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
2498 NV_MCP_SATA_CFG_20_PORT1_EN |
2499 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2501 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2503 nv_ck804_host_stop(host);
2506 static int __init nv_init(void)
2508 return pci_register_driver(&nv_pci_driver);
2511 static void __exit nv_exit(void)
2513 pci_unregister_driver(&nv_pci_driver);
2516 module_init(nv_init);
2517 module_exit(nv_exit);
2518 module_param_named(adma, adma_enabled, bool, 0444);
2519 MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: true)");
2520 module_param_named(swncq, swncq_enabled, bool, 0444);
2521 MODULE_PARM_DESC(swncq, "Enable use of SWNCQ (Default: true)");